Patent US4305535A successfully refreshed from Google Patents.
US4305535A
Expired / Lapsed
US
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Drum closure assembly
Assignee: ROCK-TENN COMPANY A CORP OF
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Filing: 1980-09-19
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Granted: 1981-12-15
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Expires: 2000-09-19
Abstract
Abstract An improved drum closure assembly which includes a ring member and a cover member, the cover member being cooperatively sized for a fitted, overlapping relationship with the ring member. The ring member comprises outer and inner ring portions which are angularly displaced from parallel to one another. The cover member includes a top cover member and an annular wall member designed to about the outer ring portion of the ring member and to seal the assembly when in use.
Inventors
- 👤 Daniel G. Brundige
- 👤 Donald F. Freund
- 👤 Douglas G. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:19
CPC Classifications
B; B65; B65D; B65D43/00; B65D43/02; B65D43/0202; B65D43/0204; B65D43/0212; B65D21/00; B65D21/02; B65D21/0209; B65D21/0217; B65D21/0222; B65D2543/00; B65D2543/00009; B65D2543/00018; B65D2543/00259; B65D2543/00296; B65D2543/00435; B65D2543/00444; B65D2543/00481; B65D2543/0049; B65D2543/00518; B65D2543/00527; B65D2543/00537; B65D2543/00555; B65D2543/00564; B65D2543/00592; B65D2543/00601; B65D2543/00611; B65D2543/0062; B65D2543/00657; B65D2543/00675; B65D2543/00685; B65D2543/00712; B65D2543/00722; B65D2543/0074; B65D2543/00787; B65D2543/00796
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
337 words
A drum closure assembly comprising: (A) a ring member made from resiliently, flexible plastic material, said ring member including: (i) an outer ring portion; (ii) an inner ring portion laterally displaced from said inner ring portion, said inner ring portion being less than about 10 degrees angularly displaced from parallel to said outer ring portion; (iii) a connecting portion fixedly joining said inner ring portion to said outer ring portion; (iv) an elongated groove being defined by said inner ring portion, said outer ring portion and said connecting portion, said groove being substantially perpendicular to a plane defined by said connecting portion; (v) a ring guide member, said member being suitable for nesting means for unfilled drums; and (B) a cover member, said cover member being cooperatively sized for a fitted, overlapping relationship with said ring member, said cover member including: (i) a top cover member; (ii) an annular wall member projecting downwardly from said top cover member, the circumference of the outermost edge of said outer ring portion of said ring member being smaller than the circumference defined by the inner surface of said annular wall member, said annular wall member being substantially perpendicular to a plane defined by said top cover member; (iii) nesting means, said nesting means comprising a groove in the outermost circumferential portion of said top cover member, said groove being receptive to cooperating nesting means found at the bottom of an assembled drum; (iv) drainage means comprising one or more interruptions in the outermost wall defining said groove of said nesting means, said interruptions being contoured so as to permit the free flow of accumulating liquid from said cover member; (v) a cover guide member, said member being suitable for properly aligning said cover member and said ring member; (C) locking means comprising a locking member extending inwardly from the innermost circumference of said annular wall member, said locking member being fixedly engaged by said ring member when said cover member is in a fitted, overlapping relationship with said ring member.
Claim 2
Dependent Claim
337 words
A drum closure assembly comprising: (A) a ring member made from resiliently, flexible plastic material, said ring member including: (i) an outer ring portion; (ii) an inner ring portion laterally displaced from said inner ring portion, said inner ring portion being less than about 10 degrees angularly displaced from parallel to said outer ring portion; (iii) a connecting portion fixedly joining said inner ring portion to said outer ring portion; (iv) an elongated groove being defined by said inner ring portion, said outer ring portion and said connecting portion, said groove being substantially perpendicular to a plane defined by said connecting portion; (v) a ring guide member, said member being suitable for nesting means for unfilled drums; and (B) a cover member, said cover member being cooperatively sized for a fitted, overlapping relationship with said ring member, said cover member including: (i) a top cover member; (ii) an annular wall member projecting downwardly from said top cover member, the circumference of the outermost edge of said outer ring portion of said ring member being smaller than the circumference defined by the inner surface of said annular wall member, said annular wall member being substantially perpendicular to a plane defined by said top cover member; (iii) nesting means, said nesting means comprising a groove in the outermost circumferential portion of said top cover member, said groove being receptive to cooperating nesting means found at the bottom of an assembled drum; (iv) drainage means comprising one or more interruptions in the outermost wall defining said groove of said nesting means, said interruptions being contoured so as to permit the free flow of accumulating liquid from said cover member; (v) a cover guide member, said member being suitable for properly aligning said cover member and said ring member; (C) locking means comprising a locking member extending inwardly from the innermost circumference of said annular wall member, said locking member being fixedly engaged by said ring member when said cover member is in a fitted, overlapping relationship with said ring member.
Claim 3
Dependent Claim
304 words
A drum container comprising: (A) a fiber drum having a closed end and an open end; (B) a closure assembly sealed thereon including a ring member, said ring member including: (i) an outer ring portion; (ii) an inner ring portion laterally displaced from said inner ring portion; (iii) a connecting portion fixedly joining said inner ring portion to said outer ring portion; (iv) an elongated groove being defined by said inner ring portion, said fiber drum being frictionally engaged by said groove, said groove being substantially perpendicular to a plane defined by said connecting portion; and (v) a ring guide member, said member being suitable for nesting means for unfilled drums. (C) a cover member, said cover member overlapping said ring member and including: (i) a top cover member; (ii) an annular wall member projecting downwardly from said top cover member, the circumference of the outermost edge of said outer ring portion of said ring member being smaller than the circumference defined by the inner surface of said annular wall member, said annular wall member being substantially perpendicular to a plane defined by said top cover member; (iii) nesting means, said nesting means comprising a groove in the outermost circumferential portion of said top cover member, said groove being receptive to cooperating nesting means found at the bottom of an assembled drum; (iv) drainage means comprising one or more interruptions in the outermost wall defining said groove of said nesting means, said interruptions being contoured so as to permit the free flow of accumulating liquid from said cover member; (v) a cover guide member, said member properly aligning said cover member and said ring member; and (D) locking means comprising a locking member extending inwardly from the innermost circumference of said annular wall member, said locking member being fixedly engaged by said ring member.
Claim 4
Dependent Claim
304 words
A drum container comprising: (A) a fiber drum having a closed end and an open end; (B) a closure assembly sealed thereon including a ring member, said ring member including: (i) an outer ring portion; (ii) an inner ring portion laterally displaced from said inner ring portion; (iii) a connecting portion fixedly joining said inner ring portion to said outer ring portion; (iv) an elongated groove being defined by said inner ring portion, said fiber drum being frictionally engaged by said groove, said groove being substantially perpendicular to a plane defined by said connecting portion; and (v) a ring guide member, said member being suitable for nesting means for unfilled drums. (C) a cover member, said cover member overlapping said ring member and including: (i) a top cover member; (ii) an annular wall member projecting downwardly from said top cover member, the circumference of the outermost edge of said outer ring portion of said ring member being smaller than the circumference defined by the inner surface of said annular wall member, said annular wall member being substantially perpendicular to a plane defined by said top cover member; (iii) nesting means, said nesting means comprising a groove in the outermost circumferential portion of said top cover member, said groove being receptive to cooperating nesting means found at the bottom of an assembled drum; (iv) drainage means comprising one or more interruptions in the outermost wall defining said groove of said nesting means, said interruptions being contoured so as to permit the free flow of accumulating liquid from said cover member; (v) a cover guide member, said member properly aligning said cover member and said ring member; and (D) locking means comprising a locking member extending inwardly from the innermost circumference of said annular wall member, said locking member being fixedly engaged by said ring member.
Claim 5
Dependent Claim
34 words
The drum closure of claim 1 or 2 wherein said cover member further includes a cover guide member, said cover guide member being suitable for properly aligning said cover member and said ring member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-14 | 1985-06-15 | 1985-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-14 | 1989-06-15 | 1989-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-14 | 1993-06-15 | 1993-12-15 | $7700.00 | Window Closed / Lapsed |